With <a href="https://pngquant.org/" onclick="try{if(_gaq!=undefined){_gaq.push(['_trackEvent','Outbound','Click','Tip.Pngquant']);}}catch(err){}" target="_blank"><img width="30" height="32" src="/tips_data/pngquant.png" srcset="/tips_data/pngquant@2x.png 2x" style="float:left;padding:0 1em 0 0" alt=""> pngquant</a> you can convert large, transparent 24-bit PNG files to a format that is 4 times smaller, and supports alpha transparency in all browsers.
